He didn't called her "a whore", he called a "vagabunda" which can mean either "whore" or "lazy person who doesn't work", he explicitly said in the video that he meant the second option.
Anyway, bitcoin is a libertarian/ancap tool and strategy created to minimize the power of the state, and most of us libertarians believe there are inalienable rights that cannot be superseded by state laws, and this includes freedom of expression. If you are against libertarianism than you should be really afraid of bitcoin, because it was made as a tool to subjugate the state, to evade tax and fuck up with commies. And it's working.
You are allowed to call someone a whore or a lazy asshole or anything you want, that doesn't mean that you don't have to handle the consequences of your actions.
I don't really know why a lot of people act like freedom of expression means that you can say anything without consequences, if there's not a state to enforce law, a lot of stuff that would qualify as freedom of expression would be solved by violence.
He evade taxes, but still enjoy the benefits of the state this is a clear hypocrisy that I see in a lot of the admirers of Ayn Rand.
Also, ancaps that believe that property is a natural right that would exist without a state to protect it are completely delusional.
https://en.wikipedia.org/wiki/Civil_Disobedience_(Thoreau)